Hello @developer53 and welcome to the forums.   That smoke effect in the background on mousemove is likely created with WebGL and probably not that easy to realize. While GSAP can also animate things in a WebGL context, you won't be able to create something like that with GSAP alone.   I remember a fluid-simulation that looks very close to that background smoke. Click and drag on the canvas to see the magic happen in this sandbox...   https://paveldogreat.